{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-121626",
        "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "state": "PUBLISHED",
        "assignerShortName": "VulnCheck",
        "dateReserved": "2026-11-03T16:57:44.441Z",
        "datePublished": "2026-11-03T17:13:53.309Z",
        "dateUpdated": "2026-11-03T17:13:53.309Z"
    },
    "containers": {
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                "dateUpdated": "2026-11-03T17:13:53.309Z"
            },
            "datePublic": "2026-08-25T00:00:00.000Z",
            "title": "GNU Gatekeeper before 5.16 Out-of-Bounds Read in H.460.24 RTCP Probe Handler",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "GNU Gatekeeper (gnugk) before 5.16 contains an out-of-bounds read vulnerability in H46024Socket::ReceivedProbePacket() that allows remote attackers to cause a heap over-read by sending short probe packets. Attackers can send a short application-defined RTCP packet to the media port during H.460.24 probing to read past the heap allocation and possibly crash the gatekeeper."
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Out-of-bounds Read",
                            "cweId": "CWE-125",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "willamowius",
                    "product": "gnugk",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "custom",
                            "lessThan": "5.16"
                        }
                    ]
                }
            ],
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                        "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
                        "attackVector": "NETWORK",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "vulnConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "LOW",
                        "subConfidentialityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "subAvailabilityImpact": "NONE",
                        "baseScore": 6.3,
                        "baseSeverity": "MEDIUM"
                    }
                },
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                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
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                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "LOW",
                        "baseScore": 3.7,
                        "baseSeverity": "LOW"
                    }
                }
            ],
            "references": [
                {
                    "url": "https://github.com/willamowius/gnugk/commit/160aa27344ecc9a443cccaa63e8d7fa95a766610",
                    "tags": [
                        "patch"
                    ],
                    "name": "Patch Commit"
                },
                {
                    "url": "https://github.com/willamowius/gnugk/releases/tag/v5_16",
                    "tags": [
                        "release-notes"
                    ],
                    "name": "gnugk v5_16 Release Notes"
                },
                {
                    "url": "https://github.com/willamowius/gnugk/blob/v5_15/GkClient.cxx#L963-L990",
                    "tags": [
                        "technical-description"
                    ]
                },
                {
                    "url": "https://github.com/willamowius/gnugk",
                    "tags": [
                        "product"
                    ]
                },
                {
                    "name": "VulnCheck Advisory: GNU Gatekeeper before 5.16 Out-of-Bounds Read in H.460.24 RTCP Probe Handler",
                    "tags": [
                        "third-party-advisory"
                    ],
                    "url": "https://www.vulncheck.com/advisories/gnu-gatekeeper-before-5.16-out-of-bounds-read-in-h-460.24-rtcp-probe-handler"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "Tristan Madani (Talence Security)",
                    "type": "finder"
                },
                {
                    "lang": "en",
                    "value": "Jan Willamowius",
                    "type": "remediation developer"
                }
            ],
            "x_generator": {
                "engine": "vulncheck-endgame"
            }
        }
    }
}